Merge branch 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel...

[linux.git] / drivers / tty / tty_port.c

diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 044c3cbdcfa40664497d13bd00e607584eff99c7..5023c85ebc6e0002d9984ad8e24090b8531a7c8b 100644 (file)
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -89,7 +89,8 @@ void tty_port_link_device(struct tty_port *port,
 {
        if (WARN_ON(index >= driver->num))
                return;
-       driver->ports[index] = port;
+       if (!driver->ports[index])
+               driver->ports[index] = port;
 }
 EXPORT_SYMBOL_GPL(tty_port_link_device);